This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

The walls are decorated with whimsical murals painted by the creator of the Madeline franchise.

This bar hosts an ever-evolving napkin art installation devoted to an American president.

This New England covered bridge is home to the tale of a jilted lover known to haunt the area.

This rare basilica nestled right in downtown Asheville is an architectural marvel, inside and out.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

These imposing walls and towers look more like the ruins of a fortress than a monastery.

Every week, a festive public jam session breaks out in downtown Asheville.

The final resting place of New England's last "vampire."

A museum of anything and everything Stooge.

The body of St. John Neumann and his collection of hundreds of relics, on display in a Philly church.

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

World's first "penitentiary," meant to be humane, drove men insane.

Two insane asylum bodies embalmed by an amateur.

This magnificent museum claims to house the cranium of a disciple and the skull of a pope.

The footprint of a frustrated devil in Munich's Cathedral.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

Model Trains and Much More in Hamburg.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

Where America's first doomsday cult awaited the end of the world.